Ventilator fan mounting



Nav. ,25, 1952 R, v, PFAUTSCH 2,619,021

VENTILATOR FAN MOUNTINGl Filed Aug. 4, 1949 2 SHEETS-SIEET 1 Nov. 25, 1952 R. v. PFAUTscH 2,619,021

VENTILATOR FAN MOUNTING Filed Aug. 4, 1949 2 SHEETS- SHEET 2 IN V EN TOR.'

ATTORNEYS.

Patented Nov. 25, 1952 VENTILATOR FAN MOUNTING Raymond V. Pfautsch, Chicago, Ill., assigner to ILG Electric Ventilating Company, Chicago, Ill., a corporation of Delaware Application August 4, 1949, Serial No. 108,595

Claims. 1

In the construction of room ventilators, especially for use in kitchens, one of the essentials is to make possible the mounting of the fan and motor on the Ventilating duct after the plastering has been completed. Another essential, after installation, is to subsequently permit the ready retraction or removal of the fan and motor so as to render them and the adjacent duct easily accessible for cleaning or repair. The attainment of these essentials involves the problem of suitable electrical connections.

The main objects of this invention, therefore, are to provide an improved form of mounting for a Ventilating fan for use in exhausting air from, or drawing air into, a room through a concealed duct leading to the exterior of the room; to provide a mounting of this kind having an improved construction of two separable sections, one of which supports the fan motor and the other of which constitutes a part of an exhaust duct recessed in the wall of the building; to provide on these two sections an improved arrangement of the standard electrical plug and receptacle elements for connecting the fan motor to a source of electrical power; to provide improved means for adjusting one of said electrical elements with respect to its mounting so as to ensure said elements always making a complete electrical contact when said sections are secured in their ian-operating relationship; and to provide an improved adjustable arrangement of means on said duct section for anchoring the fan end of the said duct section to the building beams so as to aline the extremity of said duct ush with the face of subsequently applied plaster.

In the drawings:

Fig. 1 is a perspective View of an improved ventilating fan mounting, the motor and fan support section being shown retracted so as to be accessible for cleaning or repair;

Fig. 2 is a similar view but showing the motor and fan support section secured in its normal operative position;

Fig. 3 is an enlarged interior plan View of the motor and fan member support section with the fan and motor removed, as viewed from the plane oi' the line 3 3 of Fig. 4;

Fig. 4 is an enlarged vertical sectional detail of the improved Ventilating fan mounting with all the parts in their operating relationship; the

view being taken on the line 4-4 of Fig. 3;

Fig. 5 is a further enlarged sectional detail of the electrical connections, taken on the line 5-5 0f Fig. 4;

Fig, 6 is a plan view of the electrical plug element and its mounting taken on the line S- of Fig. 5; and

Fig. 7 is a sectional detail showing the manner in which the motor and fan support is secured in operative position with respect to the ventilaing duct.

A Ventilating fan mounting constructed in accordance with this invention comprises a duct section IG, a motor and fan support section II, and a specially-arranged electrical connection I2.

The duct section I0, as clearly shown in Figs. 1, 2, and 4, is in the form of an elbow I3, on the room-exposed end of which is mounted an adjustable attaching plate I4 and an electricalconnection junction box I 5.

The vertical part I6 of the elbow duct section I3 is annular and has the lower open end thereof exposed through the ceiling I'I. The horizon tal part I8 is rectangular and is concealed between the building joists intermediate the ceiling I1 and the flooring I9 above. At its outer end this horizontal part I8 is connected with a duct 2li (see Fig. 4) leading to the exterior of the building'.

The attaching plate I4 as here shown is a single piece of rectangular form, as most clearly appears in Figs. 1 and 2. However, it could be in two pieces secured on opposite sides of the duct section In width the plate I4 is somewhat greater than the adjacent joists which support the ceiling II and iloor I9. This attaching plate I4 is provided with a flange 2| telescopically tting over the vertical part I6 of the elbow duct section I3, being adiustably held in place by screws 22 or other fastening means extending through slots 23 (see Fig. 4). By means of this plate I 4 the elbow duct section I3 may be so positioned between the joisrs that the lower edge 26 of the cylindrical vertical part I6 is disposed substantially flush with the lower surface of the ceiling Il, when it is nished. This result may be attained regardless of the structure of the ceiling, whether it be wood, wire, rock lath and plaster, plasterboard, or plywood and the like.

Apertures 25 permit nails or other fastening means to be used to anchor the plate I4 to two adjacent joists. Embossed ribs 2i serve to reinforce the plate I4.

The junction box I5 is secured to the outside of the vertical part i@ of the duct section I3, below the bottom wall of the horizontal part I8. The box I5 provides a support for the receptacle element of the electrical connection I2 and its connection to a source of current, as will be explained more fully hereinafter.

'ine motor and fan support section I I is in the form of a grill, secured to the duct section Ii] by a hinge construction 2'I and a screw 28. When these sections are so assembled the electrical connection I2 connects the fan motor 29 with a suitable source of electricity.

This grill support section II comprises a flat outer ring 38, a hub ring 3l, and two intermediate rings 32 connected together by arcuate-shaped transverse ribs 33 and 3d disposed diametrically of the rings. The hub ring 3l is provided with apertured lugs 3G on which the motor 29, for the fan 35, is anchored.

The rib 33 is channeled at 31 between the hub ring I and a pocket 38 at the outer end of the rib. The channel 31 conceals a cable 39 leading from the motor to a part of the electrical connection I2 seated in the pocket 38, as will be explained presently.

The hinge connection 2l comprises an angle bracket d and a plate il respectively connected to the duct section Hl and the motor and fan support section I I to swingably support the latter on the former.

The bracket d is in the form of an angle strip, the inner end of which is anchored to the vertical part I6 of the elbow duct section I3 directly opposite the junction box I5. A screw, or bolt and nut, i2 extending through a slot i3 permits the bracket i5 to be adjustably positioned so that the horizontal partmay abut against the under surface of the ceiling I?. At its outer end the horizontal part of the bracket d is provided with spaced ears 51 for supporting a hinge pin d4.

The plate 4I is formed with a hook i5 adapted to fit over the central portion of the hinge pin 4Q and is secured to the motor and fan support section II, by screws 45, at the outlet end of the rib 3d. The pin [i4 and hook d5 are so formed that the motor and fan support section II may be swung on the duct section IU between horizontal and vertical positions, as so clearly shown in.

Figs. l and 2. A rubber pad 4? is suitably attached to the plate 4I, inwardly of the hook d5, and serves to so rmly hold the hook l5 in contact with the pin 44 as to preclude any vibrating of the hinge connection 2l when the motor and fan support section I I is secured in place and the motor and fan are in operation.

The electrical connection I2 comprises a receptacle element 48 and a plug element 19, respectively mounted in the junction box I5 and in the pocket 38. The receptacle and plug elements 43 and i9 are of conventional construction and are so arranged that they will readily enter into engaging relationship when the motor and fan support section I I is secured in its normal operative relationship with the duct section l D.

The receptacle element 48 is secured to a plate 59 by means of a clamp 5l anchored to the receptacle element 48 by a screw 52. The plate 55, 1n turn, is secured at its opposite ends to screws 53 between the heads thereof and integral collars 5t. The screws 53 are adjustably supported o n ears 55 formed on the inner walls of the junetion box I5. This arrangement permits a shifting of the receptacle element 33 within the junction box I5 to so position the outer face thereof as will ensure a good electrical contact with the plug element 49. Such an adjustment might be very much needed if the plaster around the open end of the Vertical part I6 of the duct section I3 should be somewhat thicker than was contemplated when the adjusting plate It was set. Wires 56 are connected to the receptacle element d8 in the usual manner and lead to a conduit 51 secured to the junction box I5 by the usual clamp 58.

The plug element i9 is secured in the pocket 38 at the end of the channeled rib 33 by screws 60 and connected in the usual manner to the cable 39.

A Ventilating fan mounting constructed in accordance with this invention, for installation in new buildings, permits the duct section I0 to be set in between the joists of the building and anchored thereto while the building is in the c-ourse of construction, before the lath and plaster are applied. The motor and fan on its mounting II can be attached to a duct section IIJ after the plastering has been completed and the build- Ving has been enclosed. This obviates the possibility of such a valuable piece of equipment as the motor and fan being exposed to the weather or subject to tampering or theft prior tc the setting of the doors and windows.

When it is desired to clean, adjust, or repair the fan orY motor or secure access for any reason to the Ventilating duct, the removal of the screw 28 permits the motor and fan and its mounting ii to be swung down to a position such as shown in Fig. l. After making the necessary adjustments or cleaning the parts, the motor and fan and its mounting I I may be swung back into operative position and secured in place by reinserting the screw 28. The improved form and mounting o1" the electrical connection I2 makes it unnecessary to disconnect 0r reconnect any wiring.

f, perchance, it is desired to completely remove the motor and fan and its mounting II, the mounting I I may be swung back beyond a right angle relationship to the ceiling Il', as shown in Fig. 1, so as to permit a disengagement of the hook d5 from the pin 44.

Variations and modifications in the details of structure and arrangement of the parts may be resorted to within the spirit and coverage of the appended claims.

I claim:

l. A ventilator-fan mounting comprising, two separable sections, one of said sections being in the form of a duct having an opening in one end thereof, a motor-driven fan on said other section, means for hinging said other section to said duct section, other means coacting with said hinge means for securing said sections together to operatively position said fan in said opening, an electrical receptacle element fixed on said duct section for connection with a source of electrical current, a coacting plug element fixed on said other section and connected to the fan motor, and means for adjusting said receptacle element on said duct section to ensure the positioning thereof to secure effective electrical contact with said plug element when said sections are secured in fan-operating relationship.

2. A ceiling ventilator-fan mounting comprising, a duct section adapted to be anchored between ceiling joists, a junction box secured to said duct section, an electrical receptacle element, means adjustably supporting said receptacle element in said junction box for movement perpendicular to the ceiling, a motor and fan support section, means for hingedly connecting said support section to said duct section to swing between a horizontal operating position and a retracted nen-operating vertical position, an electrical plug element xed on said motor and fan support section opposite said hinge means to engage said receptacle element when Said fan and motor support section is secured in fan-operating horizontal position on said duct section, and means for holding said sections in said fan-operating relationship.

3. A ceiling ventilator-fan mounting comprising, a duct section adapted to be anchored between ceiling joists, a junction box secured to said duct section, an electrical receptacle element, means adjustably supporting said receptacle element in said junction box for movement perpendicular to the ceiling, a bracket secured to said duct section diametrically opposite said junction box and having a pin oiset therefrom, a motor and fan supporting section, a plate on said motor and fan support section having an arcuate extension adapted to nt over said pin for hingedly connecting said motor and fan support section to said duct section whereby said motor and fan support section is swingable on said duct section between horizontal and vertical positions, and an electrical plug element xed on said motor and fan support section opposite said plate and adapted to be seated in said receptacle element when said motor and fan support section is secured in fan-operating horizontal relationship with said duct section, and means for holding said sections in said fan-operating relationship.

4. A ventilator-fan mounting comprising a duct section of elbow-shape, said duct having an annular wall and being adapted for positioning between building joists with its annular wall disposed so as to expose the open end thereof through the plaster subsequently applied to said joists, a plate of a width greater than the distance between adjacent joists axially shiftable on said duct annular wall for anchoring said duct section to said joists, means for clamping said plate to said duct annular wall to locate the end of said duct wall substantially flush with the outer surface of said subsequently-applied plaster, a junction box on said duct annular wall, an electrical receptacle element, means for adjustably supporting said element in said box so as to shift the end of said element relative to the outer surface of said plaster, a motor and fan support section,

means hingedly connecting said motor `and fan support section to said duct section to swing between an operative horizontal position and a retracted position, an electrical plug element xed on said motor and fan support section diametrically opposite said hinge means and adapted to engage said receptacle element when said motor and fan support section is secured in its operative horizontal position, and means for holding said motor and fan support section in said operative position.

5, A ventilator-fan mounting comprising, two separable sections, one of said sections being in the form of a duct and adapted to be anchored in a wall, the other said section being in the form of concentric rings connected by transverse ribs, one of which ribs is channel-shaped and formed with a pocket at its outer end, means for mounting a fan motor on said other section, an electrical connector element secured in said pocket, a cable concealed in said channeled rib and connected to said element, means on said sections for holding said sections in assembled relationship, and a second electrical connector element secured to said one section in position to engage said first-mentioned electrical connector element when said sections are assembled.

RAYMOND V. PFAUTSCH.

REFERENCES CITED rlhe following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,088,687 Dodds Mar. 3, 1914 1,636,358 Fairman et al July 19, 1927 1,792,514 Spear Feb. 17, 1931 2,005,615 Ferris June 18, 1935 2,011,419 Ross Aug. 13, 1935 2,011,421 Searles Aug. 13, 1935 2,084,807 Hueglin June 22, 1937 2,418,760 Cucci Apr. 7, 1947 2,438,371 Marholz Mar. 23, 1948 

